关于筒中筒建筑结构的高层建筑走道排烟问题的讨论天津市开发区兰发建设设备工程有限公司潘渊清天津市航道局刘继元现代高层建筑中，有许多是以筒中筒结构型式而竖立起来的。这种建筑物平面布局都是以内筒为垂直通道，设置电梯间、楼梯间、合用前室，中间为环形走道，外筒... Discussion on the issue of exhaust smoke in the walkway of high-rise building with tube-in-tube structure Tianjin Development Zone Construction Equipment Engineering Co., Ltd., Tianjin Development Zone Pan Yuanqing, Tianjin Waterway Bureau Liu Jiyuan Many modern high-rise buildings have been erected in the form of a cylindrical tube structure. The plane layout of this kind of building is based on the vertical passage of the inner tube, set up the elevator room, the stairwell, the pre-combination room, the middle is the annular walkway, the outer tube...